Combined rail clamp and chair.



3. W. BIRSONG. COMBINED RAIL CLAMP AND CHAIR: APPU'ATmN mfp FEB. 19.191s.

Patened Aug. 29. 916.

JOHN W. BIRDSONG, OF COI-IAY, MISSISSIPPI.

COMI INED RAIL CLAMI AND CHAIR.

Application filed Firuary 19, 1916. Serial No. 79,417.

To all whom t may concern Be it known that I, JOHN WV. BninsoNo, a.citizen of the United States, residing at Cohay, in the county of Smithandv State of Mississippi, have invented certain new and usei'ulImprovements in Combined Rail Clamps and Chairs; and I do hereby declarethe following to be a full, clear, and exact4v description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

The object of this invention is to provide a combined rail clamp andchair, that will effectively hold the rail against creeping and 'willadmit of the rail clamp being held in oper'ative position without theuse of spikes, and will also admit of the strain caused by the vibrationof the rails during the passage of rolling stock thereover being equallydis-I tributed throughout the chair and clamp and relieve the retainingmeans for the.

cation, reference being had tothe acc0m-v paiiying drawings forming apart thereof,

in which:

Figure 1 is a transverse section taken i through one of the rails ot' atrack, and

slimving the rail resting on the improved chair and clamped to the chairby the chimp, Fig. 2 is a top plan view of Fig. 1, Figiis a reverse planview of Fig. 2, Fig. 4 is a detail perspective view et' the under sideot' the clamping member.

Referring-to thedrawings more in detail, the niniicrkal 1 designatesrail chair, provided at one end thereof with a raised portion 2, whichforms a Aseat for the base flange 3 ot the rail 4. The raised portion 2has its upper surface provided, at one end thereof, with a i'ailbase-engaging laiige 5, adapted to cngageover the base fiange 3 of therail and assist in holding the rail in operative position. |The oppositeend ot the chair 2 is provided with a pair ot' openings adapted toreceive spikes tor securing the chair to a tie. The portion 2 has thatciid which opposite the end which has the fiaiige 5 formed thereonundercut, to provide the ilange 7. i

' spegincacion of Letters Patent.

Patented Aug.

Pivotally associated with therail chair 1 ata point adjacent ,theraisedportion-2 isa. rail clamp 9, which has pivotal connection'y withthe chair 1 by means of the pivot pin 10, which extends through theclamp 9 and theehair 1 at one end of the clamp, as shown in Figs. 1 and2 of the drawings. The clamp 9 has its opposite end provided withatransn v'ersely extending slot 11, which is substam. tially V-shapedfor the major portion of its.

length and the rear wall of the slotr 1 1 is curved inwardly adjacent.one side of the clamp, to' provide the cam surface 12, and the lowerwall ot the slot-11 is cutaway and curved at a oint adjacent the camsurface 12',as is shown at 13.

In use, when it is desired to clainpthe rail' 4 to the chair 1, theclamping member 9 is swung to the position shown inv dotted linesea,wie. l

in Fig. 2, and the rail 4 mounted upon the raised portion 2, and engagedunder the flange 5. The clamp member 9 is then swung to the positionshown in Figs. 1 and 2, so as to cause the upper and lower walls ot theslot 11 to engage, respectively, over the adjacent flange of the railandbeneath the flange 7 formed on the adjacent endfof the raised portion 2,further movement of the clamp 9 being prevented by virtue of the rearwall of the slot 11 engaging against the adjacent edge ofthe flange 7,as shown in the drawings. Y

Having thus described my invention what I claim .as new, is:

1. device ot the class described comprising abase, a raised portionformed ,on the upper side oic the base at one end thereof,`a railsupported by the raised portion and the base, a flange formed on loneend of the raised portion and adapted to engage one side of the i'ailbase, the opposite end of the raised portion being provided withatlange,` a clamping iiieinb'er pivotally associated with the base andhaving one edge thereof pro vided with a slot adapted when the clampingincinber is in operative position to I'e-.'V ceive the last-mentioiiedfiange on the raised portion and one side of the rail base.

2. The combination vwith a base plate adapted to support aall and havinga A llangc thereon for overlying one side of the rail, oi a clamppivotally associated with the base and having one end thereof pro-`vided with a transverse slot adapted whenl the clamp is in operativeposition to receive .the flange on thelbase and one side of the base ofthe mii., said chimp having the reni In testimony whereof I uiix mysignature Walil of the slot thereii provided with a cam in presence oftwo witnesses.

sur ace at one end o the Wn 1 and having T y T the longitudinnIlowerledge of the wall of JOHB XV' BIRDSOL G' the slot curved at one endthereof und z iglja.- Witnesses:

cent the cam surface on the inner wall oi S. W. HALL,

the slot, for the purpose specified'.I F. BLYKELLEY.

